Roll src/native_client/ a7d51fd7c..d78d8b523 (1 commit).
Roll src/native_client/ a7d51fd7c..d78d8b523 (1 commit).

https://chromium.googlesource.com/native_client/src/native_client.git/+log/a7d51fd7c7f4..d78d8b5237f0

$ git log a7d51fd7c..d78d8b523 --date=short --no-merges --format='%ad %ae %s'
2016-02-16 sbc Fix getopt signature in port_win.h

CQ_INCLUDE_TRYBOTS=tryserver.chromium.linux:linux_chromium_dbg_32_ng,linux_nacl_sdk_build
TBR=mseaborn@chromium.org

Review URL: https://codereview.chromium.org/1701253002

Cr-Commit-Position: 972c6d2dc6dd5efdad1377c0d224e03eb8f276f7@{#375762}

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